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Finding the Third Proportional to 89,383.50 and 138,489.75

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Solution

The third proportional to 89,383.50 and 138,489.75 is: 214,574.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,383.50 : 138,489.75 = 138,489.75 : x
  2. Step 2: Convert to fraction form
    89,383.50/138,489.75 = 138,489.75/x
  3. Step 3: Cross multiply
    89,383.50x = 138,489.75 × 138,489.75
  4. Step 4: Simplify right side
    89,383.50x = 19,179,410,855.06
  5. Step 5: Solve for x
    x = 19,179,410,855.06/89,383.50
  6. Step 6: Final answer
    x = 214,574.40

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.